Brake



J. T. HALSEY.

BRAKE. APPLICATION FILED AUG-15, 1913- RENEWED NOV. 28, I917.

Patented July 27, 1920.

3 SHEETS-SHEET I.

l. T. HALSEY.-

BRAKE. APPLl-CATION FILED AUG- 1-5, 1913. RENEWED NOV. 28, I917.

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J. T. HALSEY.

BRAKE.

APPLICATION FILED AUG-17. 1913- RENEWED NOV- 28. 191-7. 1,348,106.

Patented July 27, 1920.

3 SHEETS-SHEET 3.

' UNITED STATES ;,o1,= 1=1c1s.

nns n SEY, or PHILADELPHIA, PENNSYLVANIA; SUE MASONIMAURY HALSEY, F PHILADELPHIA, PENNSYLVANIA, ADMILIISIIIBATRIX or sAIDJAMEsJ. HAL- se nEcEnsEDI Specification of Letters Patent.

BRAKE.

Patented. July 2?, 1920.

Application filed Angust 15, 1913, Serial 110 784675 Renewed, November 28, 131,7. Serialflo. 204,476.

To all whom z't may concern:

Be known that I, James-T. HALsEY, a citizen of the, United. States, residing in. Philadelphia, Pennsylvania, have invented certain Improvements in Brakes, of which be controlled by hand, or by a small auf-X. .Y. iliary motor, electrically driven orother-r' wise, and to have such brake so controlled or arranged as to be highly sensitive and sus-,

ceptible of very gradual application, in

order that a braking action or effect substantially similar to that produced by a brake controlled by fluid under pressure, may beproduced by mechanical means. A further object of my invention is to provide means for quickly applyingthe brake should occasion demand. 7

These and other features-of my invention will be more fully described hereinafter, reference being had to the accompanying drawings, in which: v I Figure 1 is aninverted plan viewof the under side of a street car, showing my 'im- 2 proved braking mechanism in the operative position with respect ,to the trucks of the car and the brake beams carrying the usual brakes for engagement with the wheels;

the opposite end of the spring 3. Pins 28 such mechanism being actuated bya motor; Fig. 2, is an enlarged sectional plan view of the brake shoe operating mechanism;

Fig. 3, is a sectional view on the line 33', Fig. 2; i

Fig. 4, is a sectional view on the line 4-4, Fig.3; and r Fig. 5, is a view of a detail of, my improved construction.

In the drawings herewith, 1 represents a shell or casing, which may .be disposed on the under side" of a car, containing. a series or set of springs designed to apply the brakes to'the wheels of such car. These springs are indicated at 2 and 3, (and may be employed with auxiliary or assistant springs 2 and 3 'internally disposed with vend of said springs.

respect to the main springs 2 and 3). ,The springs 2 and 3 are shownasunder compressionto apply the brakes by theirQtension throughthe medium of levers 5 and fi, having their inner ends 5 and 6 inoperative engagement with said springs,.while their outer ends 5 and6 are connected "to'links or rods 7 and 8; the latter being'connected at 9 to levers 10, pivoted at 11 to thelframe of the trucks. Brake beams 12 carrying the usual brake-shoes 18.are connected, at; 14. to

I the ends of the levers 10. The levers'5 and 6 may be connected together by.a bar 15 pivoted thereto ate and 6; said bar providing fulcrums for said levers, and the latter being apertured to .permit adjustment, of said bar with respect thereto.

The tension exertedby these springs is re lieved, and they may. be further compressed by the action of .a gear segment 16. journaled on a shaft or spindle 1 7; and. carrying a sleeve 18, which is, in two parts, coupled at 19 for convenience. V i I i sleeve has an arm 20, While, the. other, portion is connected to the gearseginent 16,; Connected to said arm 20 and the gear segment 16, being pivotallyattached in axial aline- 'ment, are links 21, pivotally. connected to pins 22 carried by rods or bars 23 in operative engagement w th one end .of. each spring; said bars being pivotally connected with pins 24 and 25, carried by cups or caps- 24" and 25 respectively, receiving the one pivotally connected; at one endto, the pins 24 are connected at their opposite ends to pins 27 carried by a cup or cap .27 receiving are carried by the cupi or cap 28 receiving the opposite end of the; spring 2, and these cups or caps are connected together by links 29 carried by said pins. The spring2is positioned by arms 30 carried by a shaft or spindle 31 extending across the casing, 1; the opposite ends of said arms .bei'ng pivotally connected to the pins 24 -ofthe cup orcap- 24 and it may be, guided byinternally disposed telescoping members 32 andl33 carriedby the cups or caps24 and.28f,respec- One. portion. of said In addition links 26 end of said spring has ears 34L which *are' free, and these ears 34 and 34 are pivotally attached, respectively, to the ends 5'" and 6 of the levers 5 andG, which are connected,

to be operatively connected therewith by means of a clutch 41 under control of alever 42, which latter lever may be connected by any suitable or well known means (not shown) to a hand lever ad acent'the motor controller or other mechanism under the control of the motorman on the platform of the car."

Themot or is a constantly running structure, and when the clutch is in operative engagement with said gear wheel 39, it will 7 drive the shaft 40, and with it'a pinion 43,

which meshes with a gear wheel 14 on the shaft or spindle 17, driving a pinion 45,

which in turn drives a gear wheel 46, liavin engagement with the segment 16 journaled on the shaft or spindle 17, to operate the linkage before described whereby the action of the springs is controlled. \Vhen therefore it is desired to rel e'ase the brake, the clutchis operated to couple the driven wheel 39 to the shaft 10 so that power is tran'smittedfrom the'motor 36 to the pinion 43, thence through the gear 44, pinion 45, gear 46 and pinion 17, to the toothedsegment 16. The turning of this latter with the arm20, through a relatively small angle in acounter clockwise direction, pulls down on thelinks 21 and levers 23 so that the latter not only directly compresses the spring 3 but also indirectly through said spring andtlie 2 1 and spring seat 2r, act to exert acom pressive force on the spr1iig2 which ulti- I'nately draws together the ends 5 and-6 of to release thebrake shoes from the wheels. When theoperator through the hand operated device connected to the lever 12, disengages the clutch 11, the two springs 2 and 3 are allowed to expand and restore the parts to their original position, the, latter springforcingapart the inner ends of the 1 levers 5 and 6 and through the links 7 and 8,.

leverslO and beams 12, causing the brakes to be applied at a rate regulated by the gearingand controlled by the intermittent closure and release'of the clutch 41. V

The initial effect of the motor driving the gearing and actuating the segmeiit 16 is to' compress the-spring 3 (with its assistant or auxiliary spring 3 internally d1sposed,)

through the medium of the several levers and arms comprising the"liiikage',*an d the compression of this spring 3*(and its auxiliary spring 3) will notreact upon-the spring 2 (with its auxiliary or assistant spring 2) until said spring'3 (and 3) has been compressed to a'very high degree. For

instance, it maybe assumedthat the power exerted by the'spring 2'- (and 2")"a1i'd tend mg to separate the levers 5 and 6 so as to apply the brakes amounts to ten thousand pounds, and at such pressure the brakes will beheld in solid contact with the wheels," securely gripping the same and preventing movement of tlie latter,and this condition will not be overcome until the spring 3 (and 3) has been compressed to such an extent as to cause the levers to react upon said spring 2 (and 2?) and effect compression of the same.

VVhen the brake (motor) controllerhan dle is released by the motorinan, the clutch 41-1 is disengaged and the springs, released from the forces tending to compress them,

apply the brakes. Incase this action is not sufliciently quick, I may employ the arraiigement of clutches 41 and 41-1 illustrated in dotted lines, Fig. 2, and in full lines, Fig. 5, so thatthe motor may beused as positive means for backing off the gear ing when applying thebrakes; assisting the action and saving time. 7 g

iVhen the clutch 41 is operatively engaged, as shown'in Fig. 5, the motor shaft is driving the gear wheel 39 to compress the springs; such arrangement being the same asthat indicated in Fig.2, with the clutch 6L1v in operative engagement. When the the motor shaft, the gear wheel 39 isdriven p r in the reverse direction so that the gearing links 26, as well as directly though 1116131113 interposed between the driving means and the springs for compressing the latter will be positively backed offftheireby permitting the force of the springs to apply, the brakes lVith the constantly running motor 36 employed byapplicant and the use ofa clutch,

the application of the brake by. the, motor- Inan or operator controlling the clutch the gearing tending to compress the springs, can be very gradual. With the clutch dis engaged, the brakes are on. under the full force of the springs tending to applythe same. lVhen the clutch 41 is thrown into t I will effect'a reversal of the gearing so as to mg or driving a pinion 47, which in turn is -which operatively connects theniotor with action, however, the gearwheel139 will be.

driven, driving the shaft 40 which in turn operates the othergearing andnlinkage to compress the springs, and such compression 7 reacting upon the levers 5 and 6 and the links 7 and 8,:relea ses the brakes.- By operating. the clutch intermittently and. for short purpose described, whether the power of the same is applied under tension or compression.

I claim:

1. The combination of brake shoes for efi'ecting stoppage of a movable member, means for supporting the same in active position, a spring for holding said shoes in braking engagement, a second spring arranged to react upon the first-named spring to render inactive the force of said spring to effect release of the braking engagement of said shoes, means including a train of gearing to effect the action of said second spring, and a motor for operating said gearing.

2. The combination of a brake shoe for application to a moving member, means for supporting the same, a spring for holding said shoe in braking engagement; a second spring arranged to react upon the firstnamed spring and cause said latter spring to release the braking engagement of said shoe, a motor for operating said second spring gearing operated by said motor, linkage operated by said gearing and interposed between the latter and said second spring, and means for controlling the operation of said motor.

3. The combination of brake shoes for application to a moving member, means for supporting the same, a pair of springs for holding said shoes in braking engagement, one of said springs being arranged to react upon the other, a motor, and means actuated bv said motor for rendering the force of the brake applying spring inactive whereby the braking engagement of said shoes may be released.

4. The combination of brake shoes for application to a moving member, means for supporting the same, a spring for holding said shoes in braking engagement, a second spring arranged to react upon the firstnamed spring to increase the force of the same, means including a train of gearing for causing said springs to release the braking engagement of said shoes, said force being applied through the second spring to the first, a motor for actuating said gearing, and means for controlling the operation of said gearing by the motor.

5. The combination of a brake shoe for application to a movable member, means for supporting the same, a spring for main taining said shoe in braking engagement with said movable member, a spring arranged to react upon and render inactive the force of said first-named spring. whereby the braking engagement of said shoe may be released, a motor, gearing actuated by said motor for operating said second spring, and means for controlling the operation of said gearing by the motor.

6. The combination with a truck and the wheels thereof, of a brake shoe for engagement with one of said wheels, supporting means for said brake shoe, a spring, levers between said spring and the brake shoe and controlled by the spring and normally tending to move the brake into engagement with said wheel, means for relieving the power applied by said spring to the brake whereby the latter may be released from its ongagement with the wheel, said means including a secondspring, and means including gearing and a motor for driving said gearing for operating said second spring tocause it to react upon the first spring and relieve its brake applying force.

7. The combination with a truck and the wheels thereof, of brake shoes in engagement with said wheels, a spring, levers between said spring and brake shoes whereby said spring may act on said levers to apply the brakes, a second spring arranged to react upon the first-named spring to release its braking force, carriers for said springs, operating links interposed between said carriers for effecting movementof one spring by the other, gearing for operating said links, a motor for operating said gearing, and means for operatively connecting said motor and gearin 8. The combination with a truck and the wheels thereof, of brake shoes in engage ment with said wheels, supporting means for said brake shoes, a plurality of springs, levers and links interposed between said springs and brake shoes, a linkage system operatively connected between said springs and through which the force of said springs with respect to each other is applied or re- -lieved, a motor, gearing interposed between said motor and the linkage for actuating the latter to compress said springs, and means for connecting and disconnecting said gearing and motor.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JAMES T. HALSEY.

Witnesses:

MURRAY C. BoYER, WM. A. BARR. 7.. 

